232ABRJ45 - Datasheet - RS-232 to RS-485 PLC ... - Delmation

Integrate – Expand – Simplify B&B ELECTRONICS PRODUCT INFORMATIONInternational Headquarters:232ABRJ454502-1/2© 2002 by B&B Electronics. All rights reserved.Model: 232ABRJ45Connect your PC/Laptop to a PLC Programming Port CEOverviewRS-232 to RS-485 PLC ConverterMake quick and easy connections to your Allen Bradley models SLC 500, 5/01, 5/02, & 5/03 PLCs usingB&B’s model 232ABRJ45. LEDs monitor communications traffic. No power supply is required since the PLC deliverspower directly to this compact converter. The unit has a DB25 female connector on the RS-232 side and an 8-pinfemale RJ45 connector on the RS-485 side. Cables are included for easy connections. A 6-inch cable with a DB25male connector on one end and a DB9 female connector on the other is included for your RS-232 connection. For directconnection to your PLC, a 7-foot, 8 conductor RJ45 cable with male plugs is provided.The 232ABRJ45 converts unbalanced, full-duplex RS-232 signals to balanced, half-duplex RS-485 signals.The converter uses Request To Send (RTS), pin 4 of the RS-232 side, to enable the RS-485 driver. When this pin isasserted, the driver is on and the receiver is off, and vice versa if RTS is disasserted. The RS-485 driver/receiversupports data “+” and data “–“. Transmit Enable (TX-EN) is also pinned out to the RJ45 connector.Between the RS-232 and PLC sides, optical isolation of 2000 VAC is also present on the data, control, andpower lines for added security against conventional problems like ground loops, spikes, and surges.FeaturesPocket sizeEasy connectionsProvides 2000 V AC isolationPowers directly from PLCLEDs for quick referenceConnectionsThe RS-232 side is configured as a standard DCE device, so the provided adapter cable connects directly toyour PC or laptop. The RS-485/PLC attaches straight to your PLC with the provided RJ45 cable. Table 1 shows the pinouts of the RS-232 connector and Table 2 shows the pin outs for the RS-485/PLC side.Table 1. RS-232 Pin OutsSignal DB25F Pin # DirectionTD 2 InputRD 3 OutputRTS 4 InputCTS 5 Loop to pin 4DTR 20 Loop to pin 6, 8DSR 6 Loop to pin 8, 20DCD 8 Loop to pin 6, 20GND 7 N/ATable 2. RS-485 Pin OutsSignal RJ45F Pin # DirectionData + 1 Input/OutputData - 2 Input/OutputTX-EN 5 OutputPower 3 N/APower 8 N/AGround 4 N/AGround 7 N/ANo Connect 6 N/ADelmation Products BVT +31 (0)79 342 2041info@delmation.nlwww.delmation.nl

Integrate – Expand – Simplify B&B ELECTRONICS PRODUCT INFORMATIONSpecificationsRS-232 Connector: DB25 femaleRS-485 Connector: RJ45 femaleSpeed:Factory default to 9600 baud (19.2k bps max.)LEDs:(1) red LED for TD status(1) red LED for RD statusIsolation:2000 VACPower Requirement: 24 VDC @ 25 mA from PLC typical (input range +10-30 VDC)Approval:FCC Class ATemperature:0 to 70°C (32 to 158°F)Dimensions:2.4 x 3.8 x 0.9 in (6.1 x 9.7 x 2.3 cm)SLC 500, 5/01, 5/02, & 5/03 are trademarks of Allen Bradley Company Inc.Baud RateInternational Headquarters:232ABRJ454502-2/2© 2002 by B&B Electronics. All rights reserved.Two resistors and one capacitor determine the baud rate. These components are factory selected to run at9600 baud. With these components, the RS-485 driver will shut off approximately 1 ms after the last character hasbeen sent. If you would like to configure the 232ABRJ45 for a specific baud rate, see table 3 and figure 1 below.Table 3. Component Replacements forChanging Baud Rate TimeoutsBaud Rate R13 (Ohm) R14 (Ohm) C10 (uF)300 330K Remove 0.1600 160K Remove 0.11200 820K Remove 0.014800 200K Remove 0.01*9600 Open 130K 0.0119200 56K Remove 0.01*Factory default settingFigure 1. 232ABRJ45 LayoutDECLARATION OF CONFORMITYManufacturer’s Name:B&B Electronics Manufacturing CompanyManufacturer’s Address: P.O. Box 1040707 Dayton RoadOttawa, IL 61350 USAModel Number:232ABRJ45Description:RS-232 to RS-485 PLC ConverterType:Light industrial ITE equipmentApplication of Council Directive: 89/336/EECStandards: EN 50082-1EN 61000 (-4-2, -4-3, -4-4, -4-6)William H. Franklin III, Director of EngineeringDelmation Products BVT +31 (0)79 342 2041info@delmation.nlwww.delmation.nl